beauty is more than sheet metal deep solar-ray glass in side and rear windows protects those inside from the full blast of the sun s uv rays onstar® uses remote diagnostics to check key operating systems about once a month then e-mails the results to you 5.4 mm glass used for the windshield provides extra insulation from external sound dust and pollen filter part of the air conditioning system keeps the air inside fresher than the air outside platinum-tipped spark plugs are designed to last for 100,000 miles reducing the need for periodic maintenance trunk-mounted battery avoids engine heat and ...